EPPP Psychology

Category - Assessment and Diagnosis

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A questionnaire designed to assess level of anxiety is administered. When analyzing results, researchers obtain a reliability coefficient of .65. What should they do with this information?

Nothing; .65 is an acceptable reliability coefficient
Decrease the number of items in the questionnaire
Use a more heterogeneous sample
Use a homogeneous but larger sample

Explanation

Answer: C - Using a more diverse group of subjects will increase test reliability, since it will increase the range of scores. Some action should be taken to address this; the lowest acceptable reliability coefficient is .70 and many researchers require a higher reliability coefficient.

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